Two-hole can opener



Feb. 12, 1935.

TWO-HOLE CAN OPENER Filed Nov. 3, 1953 a /1.5 f 4 12 a INVENTOR.

- R. HAMLIN 1,991,247

' namely: member Patented Feb. 12, 1935 UNITED STATES PATENT OFFICERalph Hamlin,

Los Angeles, Joy Laverne Hamlin, Los

Application November s, 1933,

Calif., assignor to Angeles, Calif.

Serial No. 696,513

Claims. (01. 164 -120) The invention relates to a mechanical device forpiercing two holes in the top of and the objects of the device aremechanical combinations of members (0.) whereby jaws firmly grip the rimand top of can; (b) whereby one'hole is pierced in top of can, nearmargin ofcan; (0) whereby two holes are pierced in top of can, in lineof an approximate diameter of the can, situated at the opposite margins;(d) whereby the members are so adjustable that the device will fiteither a small or large size can; (e) whereby a rolled over upper edgeof a lever, at right angle to its side, will cover working parts of thedevice and also form a more convenient surface upon which to place thehand; and (f) tension of a cross-bar can be gripped by the hand andfingers for conveniently applying the pressure. a

The invention is illustrated in the accompanying drawing. Fig. 1represents a side view (lever side) in which the device is shown withthe lever I whereby the jaws '7 and 12-have the rim and top of can, andalso in a position whereby a further pressure of the lever will causeteeth 15 and 16 to pierce two holes in top of the can. Fig. 2 representsthe under view of the device, with the lever in the in a position sameposition.

The device consists of four members, besides the stationary butadjustable binding pivot 8, l, the lever; member 2, the piercing rod;member 3, the cross-bar; member 4, the cross-head. Binding pivot 8passes through pivot hole in lever 1, slot 21 in cross-head 4, and pivothole in cross-bar 3-.

Member 1 consists of a lever working on pivot 8, and includes thefollowing combinations: (a)

pivothole 8 in which binding pivot 8 fits; (b)

stud 13, which fits into slot 21 of cross-head 4 for operation ofcross-head; (c) tooth 15' for piercing one of holes in top of can; ((1)pivot holes 9 and 14 for adjustment of piercing rod 2 so that devicewill fit either small or large size can; and (e) a rolled over upperedge 19, at a right angle to side of lever ing parts of device and alsoto form a broader surface upon which to place the hand.

Member 2 consists of apiercing rod and ineludes the'iollowingcombinations: (a) tooth 16 for piercing one of the holes in the top ofthe can; (b)T-headed stud 10 for fitting in and sliding in slot 17 ofcross-bar 3; and (c) pivot 9, which is held in pivot h e 9 0 e er l byhe sealed cans,

whereby a lever and the exf and 1, for covering workpiercing rod fittingbetween cross-bar 3 and lever 1.

Member 3 consists of a cross-bar and includes the followingcombinations: 7 (a) stationary jaw 12, one of the jaws for gripping therim and 5 top of can; (b) slot 1'7, in which fits and slides a theT-headed stud 10 of piercing rod 2; (0) slot 18, in which the two guides5 and 5 of crosshead 4 fit and slide; (d) two pivot holes 8 and. 20,used for adjusting binding pivot 8," with assembled parts, so thatdevice will fit either small or large size can; and (e) the extension ofcrossbar .3 itself to a point corresponding to the termination of lever1 when down, for gripping with fingers when pressing down'lever .1. NMember 4 consists of a cross head and includes the followingcombinations: (a) two guides, 5 and 5, which fit in slot 18 of cross-bar3; (b) jaw '7, one ofthe jaws for gripping the rim and top of can; and(c) irregular shaped. 20 slot 21 in which stud;1 3 of lever 1 fits andoperates thecross-head. a

Adjustments.--Foruse of device on a large size can pivot 9 of piercingrod 2 will be in pivot hole 9 of lever 1,' and binding pivot 3 will bein pivot hole 8 of cross-bar 3" (as illustrated in Fig. 1); ioruse ofdevice on a small size can pivot 9 of piercing rod 2 will be in pivothole 14 hole 20 of cross-bar 3.

To operator-(a) Open lever 1 until it is upright or at right angle tocross-bar 3; (22) While in position above described place device overtop of can so that the cross-bar 3 is approximately over the center ofcan; (0) Press down on lever 1 until entirely'down; (By placing the handon rolled over upper edge 19 of lever 1 and grasping the extension ofcross-bar 3 with the hand and fingers the operation is slightly easier)and (01) Open lever 1 to upright position again, 40 which opens jaws 7and 12, and lifts devicefrom can.

Result of operation-in opening lever 1 to an upright position stud 13 oflever 1 contacts the left sidewall of slot 21 in cross-head 4 andpresses the cross-head '4 (including, of course, jaw '7) backward untilthe distance between jaws 7 and 12 is greater than the length of thediameter'oi the can. When lever 1 has been pressed down untiltheposition is the same as illustrated in Fig. 1 stud 13 of lever 1contacts the right sidewall of slot 21 in cross-head 4, which acts as acam, and which presses the cross-head 4 (including, of course, jawforward until jaws .7 and 12 have firmly gripped the rim and top of can,and the shape of slot 21 is such that auniform grip will remain untillever 1 is entirely down. While in the position illustrated in Fig. 1teeth and 16 are just resting on top of can and upon pressing lever 1entirely down will pierce two holes in top of can, opposite each other,and close to margin or side of can.

Having thus shown and described an operative device to carry out myinvention, what I claim as new and desire to secure by Letters Patentis:

1. A two-hole can opener of the class described, comprising a leverwith: for receiving binding pivot passing through and held in place by across-bar, pivot the lever operates; (b) a stud for fitting in slot ofcross-head and for operation of the cross-head; (c) a tooth for piercingone of holes in top of can; ((1) two pivot holes for adjusting piercingrod so that device will fit either a small or large size can; and (e) arolled over upper edge, at a right angle to side of lever, for coveringthe working parts of the device and also to form a broader surface uponwhich to place the hand.

. 2. A two-hole can opener of the class described, comprising a piercingrod with (a) a tooth for piercing one of holes in top of can; (b) aT-headed 'stud connecting one end of piercing rod with a cross-bar, andfitting in and sliding in a slot of the cross-bar; and (c) a pivotconnecting the opposite end of the piercing rod to a lever, to whichlever there is attached a tooth for piercing the other hole in top ofcan.

3. A two-hole can opener of the class described comprising a cross-barwith (a) a stationary jaw, being one of jaws for gripping rim and top ofcan; (b) a slot in which two guides of the cross-head fit and slide; (c)a slot in which a T-headed stud at one end of piercing rod fits andslides; (d) two pivot holes for adjusting a binding pivot and assembledparts so that the device will fit either a small or large size can; and(e) an extension of the cross-bar itself to a point corresponding to thetermination of the lever when down for gripping with fingers whenpressing down lever.

4. A two-hole can opener of the class described comprising a cross-headwith: (a) two guides which fit in and slide in slot of crossbar; (b) ajaw which, together with the stationary jaw of cross-bar, grips rim andtop of can; and (c) an irregular shaped slot in which the stud of thelever fits and operates the crosshead, said slot being so shaped that itacts as a cam as soon as the jaws above mentioned grip the rim and topof can.

5. A two-hole can opener of the class described comprising a mechanicalcombination of members whereby jaws firmly grip the rim and top of can,said members consisting of: 1. A lever with (a) I a pivot hole forreceiving binding pivot passing through and held in place by across-bar, and upon which pivot the lever operates; and (b) a stud forfitting in slot of crosshead and for operation of the cross-head. 2. Across-bar with: (a) a stationary jaw, being one of jaws for gripping rimand top of can; (b) a slot in which two guides of the cross-head fit andslide; and (c) a pivot hole for receiving binding pivot. 3. A cross-headwith; (a) two guides which fit in and slide in slot of cross-bar; (b) ajaw which, together with stationary jaw of cross bar, grips rim and topof can; and (c) an irregular shaped slot in which the stud of the. leverfits and operates the cross-head. 4. A

consisting of:

binding pivot passing through pivot hole in lever, slot in cross-headand pivot hole in cross-bar.

6. A two-hole can opener of the class described comprising a mechanicalcombination of members pierced in top of can, near margin of can, saidmembers consisting of: 1. A lever with: (a) a pivot hole for receivingbinding pivot passing through and held in place by a cross-bar, and uponwhich pivot the lever operates; (b) a stud for fitting in slot ofcross-head and for operation of the cross-head; and (c) a tooth forpiercing one of holes in top of can. 2. A crossbar with: (a) astationary jaw, being one of jaws -for gripping rim and top of can; (b)a slot in which two guides of the cross-head fit and slide; and (c) apivot hole for receiving binding pivot. 3. A cross-head with: (a) twoguides which fit in and slide in slot of crossbar; (b) a jaw which,together with stationary jaw of cross-bar, grips rim and top of can; and(c) an irregular shaped slot in which the stud of the lever fits andoperates the cross-head. 4. A binding pivot lever, slot in cross-headand pivot hole in crossbar.

7. A two-hole can opener of the class described comprising a mechanicalcombination of members ((1) whereby jaws firmly grip the rim and top ofcan; (1)) whereby one hole is pierced in top of can, near margin of can;and (0) whereby two holes are pierce-d in top of can, in line of anapproximate diameter of the can, situate at the opposite margins; saidmembers 1. A lever with: (a) a pivot hole binding pivot passing throughand held in place by a cross-bar, and upon which pivot the leveroperates; (b) a stud for fitting in slot of cross-head and for operationof the cross-head; and (c) a tooth for piercing one of holes in top ofcan. 2; A piercing rod with: (a) "a tooth for piercing one of holes intop of can; (b) a T-headed stud connecting one end of for receivingpiercing rod with cross-bar, andfitting in and sliding in a slot of thecross-bar; and (c) a pivot connecting the opposite end of piercing rodto the lever. 3. A cross-bar with: (a) a stationary jaw, being one ofjaws for gripping rim and top of can; (b) a slot in which two guides ofthe cross-head fit and slide; (c) a slot in which a T- headed stud atone end of the piercing rod fits and slides; and (d) a pivot hole forreceiving binding pivot. 4. A cross-head with: (a) two guides which 'fitin and slide in slot of crossbar; (b) a jaw which, together withstationary jaw of cross-bar, grips rim and top of can; and (c) anirregular shaped slot in which the stud of the lever fits and operatesthe cross-head. 5. A binding pivot passing through pivot hole in lever,slot in cross-head and pivot hole in crossbar.

8. A two-hole can opener of the class described comprising a mechanicalcombination of members (a) whereby jaws firmly grip the rim and top ofcan; (b) whereby one hole is pierced in top of can, near margin of can;(0) whereby two holes are pierced in top of can, in line of anapproximate diameter of the can, situate at the opposite margins; and(d) whereby the members are so adjusted that the device will fit eithera small or large sized can; said members consisting of: 1. A lever with:(a) a pivot hole for receiving binding pivot passing through and held inplace by a cross-bar, and upon which passing through pivot hole in pivotthe lever operates; (b) a stud for fitting in slot of cross-head and foroperation of the cross-head; (c) a tooth for piercing one of holes intop of can; and (d) two pivot holes for adjusting piercing rod so thatdevice will fit either small or large sized can. 2. A piercing rod with:(a) a tooth for piercing one of holes in top of can; (b) a T-headed studconnecting one end. of piercing rod with cross-bar, and fitting in andsliding in a slot of the cross-bar; and (c) a pivot connecting theopposite end of pierc-' ing rod to the lever. 3. A cross-bar with: (a) astationary jaw, being one of jaws for gripping rim and top of can; (b) aslot in which two guides of the cross-head fit and slide; (0) a slot inwhich a T-headed stud at one end of piercing rod fits and slides; and(d) two pivot holes for adjusting binding pivot and assembled parts sothat device will fit either small or large sized can. 4. A cross-headwith: (a) two guides which fit in and slide in slot of cross-bar; (b) ajaw which, together with stationary jaw of cross-bar, grips rim and topof can; and (c) an irregular shaped slot in which the stud of the leverfits and operates the cross-head. 5. A binding pivot passing throughpivot hole in lever, slot in cross-head and pivot hole in crossbar.

9. A two-hole can opener of the class described comprising a mechanicalcombination of members (a) whereby jaws firmly grip rim and top of can;(17) whereby one hole is pierced in top of can, near margin of can; (0)whereby two holes are pierced in top of can, in line of an approximatediameter of the can, situate at the opposite margins; ((1) whereby themembers are so adjusted that the device will fit either a small or largesized can; and (e) whereby a rolled over upper edge of a lever, at rightangle to its side, will cover working parts of device and also form amore convenient surface upon which to place hand; said membersconsisting of: 1. A lever with: (a) a pivot hole for receiving bindingpivot passing through and held in place by a cross-bar, and upon whichpivot the lever operates; (in) astud for fitting in slot of cross-headand for operation of the cross-head;

(c) a tooth for piercing one of holes in top of can; (d) two pivot holesfor adjusting piercing rod so that device will fit either small or largesized can; and (e) a rolled over upper edge, at right angle to side oflever, for covering working parts of device and also to form a broadersurface upon which to place hand. 2. A piercing rod with: (a) a toothfor piercing one of holes in top of can; (b) a T-headed stud connectingone end of piercing rod with cross-bar, and fitting in and sliding in aslot of the cross-bar; and (c) a pivot connecting the opposite end ofpiercing rod to the lever. 3. A cross-bar with: (a) a stationary jaw,being one of jaws for gripping rim and top of can; (b) a slot in whichtwo guides of the cross-head fit and. slide; (0) a slot in which aT-headed stud at one end of piercing rod fits and slides; and (d) twopivot holes for adjusting binding pivot and assembled parts so i 3 thatdevice will fit either a small or large sized can. 4. A cross-head with:which fit in and slide in slot of cross-bar; (b) a jaw which, togetherwith stationary jaw of cross-bar, grips rim and top of can; and (c) anirregular shaped slot in which the stud of the lever fits and operatesthe cross-head. 5. A binding pivot passing through pivot hole in 1ever,slot in cross-head and pivot hole in crossbar.

10. A two-hole can opener of the class described comprising a mechanicalcombination of members (a) whereby jaws firmly grip the rim and top ofcan: (1)) whereby one holeis pierced in top of can, near'margin of can;(0) whereby two holes are pierced in top of can, in line of anapproximate diameter of thecan, situate at the opposite margins; (01)whereby the members are so adjusted that the device will fit either asmall or large sized can; (e) whereby a rolled over upper edge of alever, at right angle to its side, will cover working parts of deviceand also form a more convenient surface upon which to place hand; and(fl whereby a leverand the extension of a cross-bar can be gripped bythe hand and fingers for conveniently applying the pressure; saidmembers consisting of: 1 A lever with: (a) a pivot hole for receivingbinding pivot passing through and held in place by a cross-bar, and uponwhich pivot the lever operates; (b) a stud for fitting in slot ofcrosshead and for operation of the cross-head; (c) a tooth for piercingone of holes in top of can; ((1) two pivot holes for adjusting piercingrod so that device will fit either small or large sized can; and (c) arolled over upper edge, at right angle to side of lever, for coveringworking parts of device and also to form a broader surface upon which toplace hand. 2. A piercing rod with: (a) a tooth for piercing one ofholes in top of can; (b) a T-headed stud connecting one end of piercingrod with cross-bar, and fitting in and sliding in a slot. of thecross-bar; and (c) a pivot connecting the opposite end of piercing rodto the lever. 3. A cross-bar with: (a) a stationary jaw, being-one ofjaws for gripping rim and top of can; (b) a slot in which two guides ofthe cross head fit and slide; (0) a slot in which a T-headed stud at oneend of piercing rod fits and slides; (d) two pivot holes for adjustingbinding pivot and assembled parts so that device will fit either a smallor large sized can; and (e) an extension of the cross-bar itself to apoint corresponding to the termination of the'lever when down forgripping with fingers when pressing down lever. 4. A cross-head with:(a) two guides which fit in and slide in slot of cross-bar; (b) a jawwhich, together with stationary jaw of cross-bar, grips rim and top ofcan; and (c) an irregular shaped slot in which the stud of the leverfits and operates the cross-head. 5. A binding pivot passing throughpivot hole in lever, slot in cross-head and pivot hole in cross-bar.

RALPH HAMLIN.

(a) two guides

